{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308196323",
    "entityType": "User",
    "nonce": "0x0198a6c3ba17451d6d08f104efaa3984f7fbbf06021fc570e27753573b8c39fd",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}